Sharpener



FIG. 1 is a top plan view of a sharpener in a first position according to an embodiment of the invention;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left-side elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a right-side elevational view thereof in a second position;

FIG. 8 is a left-side elevational view thereof in a second position; and,

FIG. 9 is a rear elevational view thereof in a second position.

The ornamental design which is claimed is shown in solid lines in the drawings. Features shown in broken lines are presented for illustrative purposes and form no part of the claimed design. 

CLAIM The ornamental design for a sharpener, as shown and described. 